Comment on Hydrogen locomotive

• kn33@lemmy.world ⁨1⁩ ⁨year⁩ ago

  11-minute version

  3-hour version

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  • Seraph@kbin.social ⁨1⁩ ⁨year⁩ ago

    This is exactly what I was looking for, thank you!

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• Edgelord_Of_Tomorrow@lemmy.world ⁨1⁩ ⁨year⁩ ago

  Is this whole thread a joke or have you people not heard of electrified rail

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  • Seraph@kbin.social ⁨1⁩ ⁨year⁩ ago

    I mentioned it in my comment that you're replying to. "wired" could easily refer to above or below, just continuous current is what matters for this discussion. Why do ask?

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    • Edgelord_Of_Tomorrow@lemmy.world ⁨1⁩ ⁨year⁩ ago

      Global warming is a major maintenance and safety nightmare outside and inside major cities.

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• someguy3@lemmy.ca ⁨1⁩ ⁨year⁩ ago

  Trains are already pulling what 100 cars. It’s easy enough to have a car that’s a battery. But I think overhead lines are the way to go on the vast majority of lines.

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• You999@sh.itjust.works ⁨1⁩ ⁨year⁩ ago

  The problem with battery trains is that locomotives hardly sit around long enough to charge unless it’s some sort of switcher or in for maintenance. Really the only use case for battery locomotives outside of switchers is passenger service where it’s fairly common for a train to sit for eight plus hours. Amtrak and Siemens are actually doing this with 15 of the new airo trainsets which will run on the empire line. The trainsets will specifically run on battery while within the new York city tunnels where diesel locomotives are only allowed to operate under emergency.

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  • BastingChemina@slrpnk.net ⁨1⁩ ⁨year⁩ ago

    There is probably a use for train with battery on partially electrified lines.

    The train charge on the electrified part and use batteries on the rest.

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• topinambour_rex@lemmy.world ⁨1⁩ ⁨year⁩ ago

  For transport of people, it seems germany has some train with battery. They replace their hydrogen trains.

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• MonkderZweite@feddit.ch ⁨1⁩ ⁨year⁩ ago

  Supercapacitors.

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• lemann@lemmy.one ⁨1⁩ ⁨year⁩ ago

  If I ran the local power grid I’m not sure I’d want cargo trains using line power for traction, unless there was some mandated weight or length limit 🤔

  Without some cargo limit I think sections of the line’s voltage will just collapse under the current being drawn, whenever the cargo train moves off from a complete stop - especially if it’s a multi mile long cargo train that seems common in the US

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  • serratur@lemmy.wtf ⁨1⁩ ⁨year⁩ ago

    The Kiruna - Narvik electrified line is operating just fine with LKAB running the heaviest trains in Europe with a mass of 8600 tonnes.

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  • BastingChemina@slrpnk.net ⁨1⁩ ⁨year⁩ ago

    90% off the cargo trains are powered with electricity in France and can reach up to 750m.

    I agree It’s not multi mile long but it’s totally possible to have electric cargo trains.

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  • roguetrick@kbin.social ⁨1⁩ ⁨year⁩ ago

    There's little chance of that happening, but even if there was, they'd just use batteries for the acceleration phase. That's what hydrogen fuel cell trains do anyway, because the fuel cell can't produce enough power on it's own to accelerate the train, so they're used to charge batteries that allow it to do so.

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  • someguy3@lemmy.ca ⁨1⁩ ⁨year⁩ ago

    I really can’t see a train pulling so much that it crashes the entire system.

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  • uis@lemmy.world ⁨1⁩ ⁨year⁩ ago

    Without some cargo limit I think sections of the line’s voltage will just collapse

    I think this guy never learned about resistance. Maybe he skipped physics classes, maybe he didn’t even have them yet.

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    • lemann@lemmy.one ⁨1⁩ ⁨year⁩ ago

      Would you ellaborate on what you mean, and the assumptions you drew from the quoted text?

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